Planing-machine



fray. 2,

N-PETERS, PNOTO-UTHUGRAFHER. WASHINGTON, D. C.

UNTTED sTATns .PATENT oFF-ICE,

JAMES A. WOODBURY, OF WINCHESTER, MASSACHUSETTS.

PLANING-MACHINE. l

Specification of Letters Patent No. 10,512, dated February 7, 1854.

To all whomz' may concern Be it known that I, JAMns A. VVooDBURY, of lVinchester, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Planing Boards and for other Similar Purposes; and I do hereby declare that the following is a full, clear, and exact description of the nature and operationv thereof, taken in connection with the accompanying drawings, making part of this specification.

The subject matter of my invention relates to a new and improved arrangement of the cutting apparatus in al machine for planing boards, planks, Sac., and consists, in the first place, in the employment of a rotating disk cutter so called, which is made with a cutting edge around its periphery, concentric with the axis of rotation, and is arranged to rotate in the plane of the surface of the board to be planed; in combination with a bed upon which the board rests; and certain devices by which the board is held down upon the bed, and which also act as a mouth piece to hold the fibers ofthe material iirm under the operation of the disk cutter. y

The second part of my invention consists in combining the Bramah wheel so called with the rotating disk cutter for the purpose of removing the surplus material before it is acted upon by the disk cutter to finish its surface.

Figure l, of the drawings is a side elevation; Fig. 2 is a plan; Fig. 3 is a vertical longitudinal section through the middle; and Fig. 4, an end elevation, of that part of a planing machine 'to' which my improvements relate.

The letters refer to like parts in all the figures.

A, A, &c., is the frame of the machine. Y

It is provided withtwo upright posts A, upon either side thereof, bet-ween which the frame B is placed, which is made to move up and down, being guided in grooves in the posts, as shown, or in any other convenient manner. The frame B is provided with proper bearings to carry the vertical shaft C. This shaft receives the driving power by the pulley C', and at its lower end it carries the cutter stock D upon which the circular cutters E are fastened. The

cutter stock is made in the form of a frustum of a cone and the cuttersE are made in segments Vof a funnel formed shape, as shown, to fit the stock. The ylower edges of the cutters are ground so as tomake the edges thereof in the circumference of a c1rcle-concentric with the shaft, and isn the same plane.

F, F are presser bars which surround the `disk cutter, and serve to hold the board firmly `upon t-he b ed G which extends across the frame A beneath the cut-,ter `and supf vports the board in the act of planing.

The bar Falso `acts as a mouth piecer to the disk cutter, to confine the fibers of the wood at the point of cutting and prevent the tear ing up or splittingolf t-he surface and leaving it rough. Y

H is a presser plate within the diskcutter for the purpose of assisting to hold the material to be planed lwhen it is flexible or limber. It is attached` to a spindle I-I which extends upward through the center of the shaft and k'carries upon vits upper end acollar I upon which the helical spring J presses,s which is coiled within the hollow cap K screwed upon the upper end of the shaft C as is shown in sect-ion in Fio. 3.

L is a check nutupon the spindIe Hto j prevent the presser plate H from falling too low when the board is removed. V

By the action of the spring J the presser'V plate H 1s pressed firmly down upon theV board in a` perfectly obvious manner.

N, and are held down by the weights O attached thereto or by `some other analagous devices. P, P, Vare arms attached to the shaft C which extend outward beyond the pressersY Y F, F, and are provided with gouge cutters Q and operate likefthe well known Bramah wheel so called.

The devices for carrying the board forward, and for adjusting the height of the frame B and the cutters, and also many other minor details of a lplaning machine,-

are neither shown nor described as they constitute no part of my invention, which may be used with any of the well known arrangements for such purposes, which are in common use in the construct-ion of planing machines; and therefore I have particularly described those parts only to which my improvements specially pertain.

The operation of the improved machine is .i imity to the cutting `edge.

as follows: The frame B is adjusted to the proper heightl so that the disk cutter shall be at the required distance from the bed G to give the necessary thickness to the board. The board is fed into the machine in the usual manner and is carried forward by feeding rollers or other appropriate deivice, in the direction of the arrow as shown in Fig. 3. When it arrives at the Bramah Wheel most of the surplus material is removed thereby and the' board is reduced toY an uniform thickness. It then passes under the presser F and meets the disk cutter, which, by its rotary motion in connection with the progressive movement of the board, acts upon it with what is known as a drawing cut7 and removes from its sur face a continuous shaving. The fibers oi the Wood are held during the action of cutting by the presser F Which presses firmly upon the surface of the board in close prox- This peculiar movement of the cutting edge is highly favorable to the cutting of the surface smoothly when the grainsV ofthe Wood run obliquely, and also to offering but little resistance to the progressive movement of the board. In the planing of clapboards and other similar bodies which are nearly of uniform thickness, the use of the Bramah Wheel not required. It is also proposed to employ the first part of my invention in the splitting and shaving of leather and other similar substances in which case also the Bramah Wheel would not be used.

It is obviousthat the devices employed A,

herein described.

2. I claim the combination of the'Bramah Wheel so called, With the rotating disk cutter and its accessories, for the purpose of planing, substantially as is herein set forth.

January 29th, 1853.

JAMES A. VOODBURY. In presence of- CYRUS BAN CROFT, DWIGHT F. Hovnr.

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